Armchair



FIG. 1 is a front perspective view of an armchair showing our new design;

FIG. 2 is a front view;

FIG. 3 is a rear view;

FIG. 4 is a view taken from the right side;

FIG. 5 is a view taken from the left side; and,

FIG. 6 is a top plan view. 

The ornamental design for an armchair, as shown and described. 